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HJGHY Ebike Downtube Battery Review: High-Quality Electric Bicycle Power

When it comes to electric bikes, having a reliable and long-lasting battery is crucial for a seamless and enjoyable riding experience. The HJGHY Ebike Downtube Battery provides the power and reliability needed for electric bicycle enthusiasts.

Features and Specifications

The HJGHY Ebike Downtube Battery is designed to provide optimal performance for electric bicycles with motors ranging from 0-650W. With a choice of 36V or 48V nominal voltage and 10AH, 13AH, or 17AH rated capacity, this battery offers versatility to suit various electric bike setups. The high-quality lithium ion battery combined with a high-strength BMS protection board ensures a long cycle life of up to 1000 charges, with a life expectancy of up to 5 years. The battery can be fully charged in about 3-5 hours, making it convenient for regular use.

The shell and base plate of the battery are made of durable ABS materials, providing protection for the internal cells against damage from falls or crashes. This ensures the longevity and reliability of the battery during regular use. Additionally, the battery features a USB port, allowing users to charge their devices on the go, making it a versatile power source for various needs.

One of the standout features of the HJGHY Ebike Downtube Battery is its convenience and security. The battery can be charged on the bike, or easily removed for storage or charging in a different location, such as at home or in the office. The included Safe Lock feature also prevents the battery from being stolen, providing peace of mind for users.

Product Information

The battery’s technical specifications include a charging voltage of 42V/54.6V, a charging current of 2A, and a maximum constant discharge current of 20A as per the BMS. The working temperature ranges from 10℃ to 45℃ for charging and -10℃ to 65℃ for discharge, with a storage temperature range of 10℃ to 45℃. The product size varies based on the capacity, with weights ranging from 4.4KG to 7KG for different models. The cycle life of the battery is rated for up to 1000 charges, making it a durable and long-lasting power solution for electric bicycles and modified mountain bikes.

The package includes the 36V/48V battery with a built-in BMS board, a 42/54.6V 2A charger, and two keys for added security and convenience.

High-Quality Cell and Discharge Efficiency

With a focus on quality, the HJGHY Ebike Downtube Battery utilizes top A-grade cells to ensure reliable performance and longevity. The intelligent BMS system prevents overcharging, over-discharging, overcurrent, and short circuits, avoiding protection delays and failures.

Notably, the battery can operate within a temperature range of -20°C to 60°C, with a discharge efficiency of up to 95%. This allows riders to make the most of the battery’s capacity and extend their riding distance. Additionally, the battery has a low self-discharge rate of less than 3% when not in use, preserving its power for when it’s needed.

Ergonomic Design and Waterproof Protection

The ergonomic design of the battery case enhances user convenience and functionality. Featuring an ON/OFF switch, portable handle, power level display, and key lock, the HJGHY Ebike Downtube Battery provides intuitive operation and security. The 4 LED battery level lights accurately indicate the remaining power, allowing riders to plan their trips with confidence.

Furthermore, the battery’s solid ABS shell and base plate ensure robust protection for the internal cells, safeguarding them against impacts and environmental factors. The charger input and USB output are also designed with waterproof coverage sealing, protecting the battery from water and moisture damage, and ensuring reliability in various conditions.


The HJGHY Ebike Downtube Battery is a high-quality, versatile, and reliable power solution for electric bicycles. With its durable construction, advanced protection features, and ergonomic design, it offers riders the peace of mind and convenience they need for their electric bike adventures. Whether for daily commuting or leisure rides, this battery provides the performance and reliability required for a seamless riding experience.

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